On Tue, 2009-12-22 at 21:32 +0200, Richard Grossman wrote: > Don't understand your last statement "(though so does date-based > strings and OrderPreservingPartioner)." > What do you mean that using TimeUUID provide a better distribution > when using OrderPreservingPartioner. Or there is no effect if using > OrderPreservingPartioner
I mean that if you are using a namespace that is based on some date/time range, and you partition that up into smaller date/time ranges, and then store time series data, your data will be written to the node that corresponds to the date/time, and not to any of the others. Imagine that you have 5 nodes and they are partitioned: A -> 2009 B -> 2010 C -> 2011 D -> 2012 E -> 2013 Any writes occurring between now and Jan 1, 2010 will go to node A, at which point all writes will go to node B for the 365 days that follow, and so on. -- Eric Evans [email protected]
